<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\Department;
use Illuminate\Http\Request;
use Inertia\Inertia;

class DepartmentController extends Controller
{
    public function index(Request $request)
    {
        $query = Department::withCount('employees');
        if ($request->search) {
            $query->where('name', 'like', '%' . $request->search . '%');
        }
        return Inertia::render('admin/departments/index', [
            'departments' => $query->latest()->get(),
            'filters' => $request->only(['search']),
        ]);
    }

    public function create()
    {
        return Inertia::render('admin/departments/create');
    }

    public function store(Request $request)
    {
        $validated = $request->validate([
            'name' => 'required|string|max:255|unique:departments,name',
            'description' => 'nullable|string',
        ], [
            'name.required' => 'Nama departemen wajib diisi.',
            'name.max' => 'Nama departemen maksimal 255 karakter.',
            'name.unique' => 'Nama departemen sudah terdaftar.',
        ]);

        Department::create($validated);

        return redirect()->to('/admin/departments')
            ->with('success', 'Departemen berhasil ditambahkan.');
    }

    public function edit(Department $department)
    {
        return Inertia::render('admin/departments/edit', [
            'department' => $department
        ]);
    }

    public function update(Request $request, Department $department)
    {
        $validated = $request->validate([
            'name' => 'required|string|max:255|unique:departments,name,' . $department->id,
            'description' => 'nullable|string',
        ], [
            'name.required' => 'Nama departemen wajib diisi.',
            'name.max' => 'Nama departemen maksimal 255 karakter.',
            'name.unique' => 'Nama departemen sudah terdaftar.',
        ]);

        $department->update($validated);

        return redirect()->to('/admin/departments')
            ->with('success', 'Departemen berhasil diperbarui.');
    }

    public function destroy(Department $department)
    {
        // Cek sisa karyawan
        if ($department->employees()->count() > 0) {
            return back()->with('error', 'Gagal hapus! Departemen ini masih memiliki karyawan.');
        }

        $department->delete();

        return back()->with('success', 'Departemen berhasil dihapus.');
    }
}